It's easy to pass audio between applications on your Mac, with the power of Loopback. Create virtual audio devices to take the sound from apps and audio input devices, then pass it to any audio processing software. With an easy-to-use wire-based interface, Loopback gives you the power of a high-end studio mixing board, right inside your computer!

Combine Audio Sources
Pull audio from multiple sources into one virtual device! Just add the applications and physical audio devices you want to include to the Sources column to get started.

Powerful Channel Options
Add as many output channels as needed, then configure your routing with easy and powerful virtual wiring. Customizing exactly where audio flows is a snap.

Pass-Thru, Too
A Pass-Thru device let you pass audio directly from one application to another, with almost no configuration required. Loopback pipes audio around for you.

Play Music And More to Podcast Guests
Combine your mic with audio sources like iTunes or Farrago, then select your Loopback device as your source in Skype. Presto! Your guests hear both your voice and your audio add-ons.

Turn Multiple Hardware Devices Into One
Apps like GarageBand, Logic, and Ableton Live are limited to recording from just one audio device at a time. Thanks to Loopback, you can combine multiple input devices into a single virtual device, to record all your audio.

Create Top-Notch Screencasts
Most screen recorders allow you to include your mic's audio, and some may allow recording of system audio, but neither option is ideal. Instead create a virtual device that grabs your mic and the app’s audio to get exactly the audio you want.

Record Gameplay Videos
Making gameplay videos with great audio doesn't have to be difficult. Use Loopback with devices like Elgato's Game Capture hardware to record both your microphone and the game's audio at once!

Pairs Well With Audio Hijack
Make a simple Pass-Thru device in Loopback, then set it as the output on the end of any Audio Hijack chain. Now, you can select that source as the input in any app to have it receive that audio.

So Much More…
Loopback gives you incredible power and control over how audio is routed around your Mac and between applications. We can't wait to hear about the incredible new uses you find for it!

Works With Any Application
Make a virtual audio device with audio from the applications on your Mac, including production apps like Logic or Reason, as well as simple audio players, like iTunes or QuickTime.

A Massive Interface Overhaul
The most noticeable change in Loopback 2 is its brand-new user interface. The first version of Loopback offered tremendous audio routing capability, but harnessing that power was not as simple as it could've been. For version 2, we worked hard on a redesigned interface that will be intuitive for everyone. Loopback now features a simple new wiring system that lets you easily visualize and adjust how your audio will flow.

Volume Controls Galore
Users asked for it, and we provided it. Loopback 2 provides control over volume levels at every step of the way. The volume from individual sources can be tweaked relative to other sources, to get the perfect mix. Audio levels sent to monitoring devices can also be adjusted, as can the audio level from the virtual audio device itself.

More Powerful Monitoring
Monitoring virtual audio devices is now simpler than ever. Just add a monitor at the end of the device, and wire it up to get the exact audio desired. Listen in to the entire device, or use the custom wiring to monitor just part of the audio. You can even have multiple Monitors per virtual audio device, so you can hear exactly what you need to.

Capture Hidden Sources
Audio can now be captured from previously unavailable sources, like Siri, VoiceOver, and Text-to-Speech. Hold down the option key while clicking the Add Source button to reveal the “Running Processes” menu, then select the correct hidden source.

Up to 64 Channels
Virtual audio devices can now provide up to 64 channels of input and output, for amazing power.

Fully Configurable Channels
Just about any setup is now possible, with configurable routing of audio from all audio sources to output channels, as well as from output channels to the new, more powerful monitoring devices.

An Explicit Pass-Thru Source
Pass-Thru functionality, previously an implicit part of Loopback, is now visible as an actual audio source. This allows for more power and control over the audio passing through your virtual audio devices.

On/Off Toggles for Sources and Monitors
Loopback's virtual audio devices are more configurable than ever, with the ability to turn off individual sources and monitors within a device. Rather than deleting a source or monitor, and losing its settings, you can now temporarily toggle it off as you make adjustments to get exactly the audio you need.